The Kubota L405 coolant capacity is listed as 2.3 gal (8.7 L). It also lists coolant type ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible and antifreeze mix 50/50 coolant and distilled water mix.
Kubota L405 Coolant Capacity
| Coolant capacity | 2.3 gal (8.7 L) |
|---|---|
| Cooling system capacity | 2.17 gal (8.2 L) |
| Radiator capacity | 2.17 gal (8.2 L) |
| Coolant type | ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible |
| Antifreeze mix | 50/50 coolant and distilled water mix |
| Coolant change interval | every 2 years |
| Engine horsepower | 40 hp (29.8 kW) |
| Engine displacement | 1.9 L (115.9 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota L405 Coolant and Engine Notes
| Coolant capacity note | The Kubota L405 coolant spec points to 2.3 gal (8.7 L). Do not rely on the radiator-only amount if the full cooling-system capacity is available |
|---|---|
| Radiator capacity note | The Kubota L405 radiator figure is 2.17 gal (8.2 L). Treat it as radiator context, not always the complete refill amount |
| Coolant type note | For the Kubota L405, coolant type matters as much as capacity. The clean captured value is ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible |
| Antifreeze mix note | The Kubota L405 antifreeze mix is listed as 50/50 coolant and distilled water mix. That is the normal protection range for freezing, boiling and corrosion control |
| Coolant change interval note | For the Kubota L405, the service interval is listed as every 2 years. Time matters too, not just engine hours |
| Engine context note | For the Kubota L405, the supporting engine specs are engine horsepower 40 hp (29.8 kW) and displacement 1.9 L (115.9 cu in). Use them as context beside the coolant capacity, not as a replacement for the manual |
| Refill note | The practical service move for the Kubota L405: buy enough coolant for 2.3 gal (8.7 L), fill to spec, run the engine, then recheck the radiator and overflow bottle after cooling |
Kubota L405 Coolant Capacity FAQ
How much coolant does the Kubota L405 take?
The main coolant amount captured for the Kubota L405 is 2.3 gal (8.7 L). Buy a little extra so you can top up after the engine warms up and cools down.
Does coolant type matter on the Kubota L405?
Yes. Capacity tells you how much to buy; coolant type tells you what to buy. For the Kubota L405, the captured coolant type is ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible.
What antifreeze mix does the Kubota L405 use?
The captured antifreeze mix for the Kubota L405 is 50/50 coolant and distilled water mix. A 50/50-style mix is the common practical answer unless your manual or climate calls for something different.
When should the Kubota L405 coolant be replaced?
Use every 2 years as the service guide. Coolant can look okay but still lose corrosion protection over time.
Why does the Kubota L405 coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota L405, the supporting engine data is horsepower 40 hp (29.8 kW) and displacement 1.9 L (115.9 cu in).
Mistakes do happen. Tractor coolant specs can change by year, market, engine, radiator, cab/heater setup and service procedure. Please check the operator manual, decal information and official kubotausa.com website for official information before draining or refilling the cooling system.
